The issue that I've had is that if I run anything more than a 150 shot there is not enough bottle pressure and the car runs rich. I did some testing on a chassis dyno using jetting for a 180 shot and a bottle temp of 65º. I started with the recommended jetting for N2O and fuel but the afr was below 10:1. I kept dropping the jetting size for the fuel but it was still rich so I call NOS and they told me the bottle temp needs to be 90-95º to have 950psi of bottle pressure which they say is ideal.
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